7Chris Anderson. The Long Tail[M], Hachette Book Group USA. 2006:20
8Alex Iskold,The Art,Science and Business of Recommendation Engines[EB]. Read/Write Web, January 16,2007. http://www. read- writeweb. corn/archives/recommendation-engines, php[2007 - 7- 5]
9Mobasher B, Cooley R, Srlvastava J. Automatic Personalization Based on Web Usage Mining [A], Communications of the ACM, 2000,43 (8) : 142- 151
10Wilson T D. Models in Information Behavlour Research[J]. Journal of Documentation, 55 (3) :249 - 270
